veronicaassignment
12 views
16 slides
Aug 18, 2024
Slide 1 of 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
About This Presentation
How to multiply fractions
Size: 335.25 KB
Language: en
Added: Aug 18, 2024
Slides: 16 pages
Slide Content
Vulgar Fractions
IGCSE MATHEMATICS
0580
Digitized Notes
Multiplication of Fractions
Times You Would Multiply a Fraction
Times a Fraction
• Your family eats 1/8 of 1/2 of
a left over wedding cake.
1/8 of 1/2 or 1/8 x 1/2
Times You Would Multiply a Fraction
Times a Fraction
•Jose had already read 1/2 of his
novel. Today he read 1/12 of the
1/2 left. How much of the book
has he read?
1/12 of 1/2 or 1/12 x 1/2
Multiplying Fractions
Conceptual Understanding
•When you multiply two fractions
that are between 0 and 1 the
product is smaller than both
fractions.
½ x ¾ = 3/8
Look at the diagram on the
next slide to understand why.
Multiplying Fractions
Conceptual Understanding
½ x ¾ = 3/8
¼¼¼¼
1/81/81/8
How to Find a Fraction of a
Fraction
• The first thing to remember is “of”
means multiply in mathematics.
of=x
How to Find a Fraction of a
Fraction
•
Step 1 - When you see a fraction
problem you know when you read
“of” in the problem you multiply.
ofx
1
2
4
9
How to Find a Fraction of a Fraction
•
Step 2 – Multiply your
numerators straight across.
x 4
9
1
2
=
4
How to Find a Fraction of a Fraction
•
Step 3 – Then multiply your
denominators straight across.
x 4
9
1
2
=
4
18
How to Find the Fraction of a
Fraction
•
Step 4 – Simplify your answer.
In this case we reduce.
x 4
9
1
2
=
4
18
÷
÷
2
2
=
2
9
Multiply and Simplify
9
5
1
6
=
9
3010
3
x
÷
÷
3
3
=
Multiply and Simplify
3
4
8
9
=
24
36 3
2
x
÷
÷
12
12
=